Lone Tree, CO — Douglas County

Furnace Replacement in Lone Tree

Replacing a furnace in Lone Tree means sizing for a -3°F winter design temperature, venting correctly at 6,280 feet, and pulling the right permit. We quote flat-rate, and the price we quote is the price you pay.

Licensed & insured • Family-owned since 2004 • Flat-rate pricing

✓ Upfront flat-rate pricing✓ Lone Tree permits handled✓ Carrier, Lennox & Trane✓ All major brands serviced
Furnace Replacement

Furnace Replacement for Lone Tree homes

Replacing a furnace in Lone Tree means sizing for a -3°F winter design temperature, venting correctly at 6,280 feet, and pulling the right permit. We quote flat-rate, and the price we quote is the price you pay.

Every visit starts with a real diagnosis, not a parts swap. You get the price, the reason and the options before we touch anything.

See our main furnace replacement page for how we approach this work across the metro.

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Load calculation and sizing

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Altitude setup

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Venting and condensate

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Permit and inspection

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Haul-away of the old furnace

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Warranty registration

Lone Tree service(303) 627-3395Flat-rate • 7 days
Lone Tree, CO — local facts

Furnace Replacement in Lone Tree: what’s different here

Lone Tree publishes its own HVAC design values: a -3°F winter design temperature, 90°F summer dry bulb and 6,343 heating degree days. Unlike its CORE-served neighbors, the city is Xcel for both gas and electric.

Altitude derate

Gas appliances are derated roughly 4% per 1,000 feet above 2,000 feet (the fuel gas code rule), so at 6,280 feet a furnace needs the correct orifices and manifold pressure to deliver its rating. We set it up for Lone Tree, not sea level.

Rebates in 2026

Xcel’s gas furnace rebates ended Jan. 1, 2026, and the federal 25C credit ended for anything installed after Dec. 31, 2025. If rebates matter, a cold-climate heat pump is where the money is.

Permit

Permits are online-only through the city’s Accela portal. Lone Tree does not issue contractor licenses, but everyone on a permit must hold a Lone Tree business license.

Hytek pricing

Furnace Replacement: $3,500 – $8,500 installed. Flat-rate, approved before work starts. Free estimates on replacements.

Elevation & climate

6,280 ft. Avg January low 14.9°F, avg July high 87.9°F, design temp -3°F.

Homes

About 35% of Lone Tree homes were built in the 2010s, mostly in RidgeGate (median year built 2004).

Utilities

Electric: Xcel Energy. Gas: Xcel Energy.

Permits

City of Lone Tree Building Division. Permits are online-only through the city’s Accela portal. Lone Tree does not issue contractor licenses, but everyone on a permit must hold a Lone Tree business license.

Rebates and programs for Lone Tree homeowners (2026)

  • Power Ahead Colorado: $1,500 off a new ENERGY STAR cold-climate heat pump (ducted or ductless) in an existing home. Needs pre-approval through a Power Ahead-badged contractor before work starts; stacks with utility and state incentives. Source
  • Colorado heat pump tax credit: $1,000 for air-source systems in 2026, claimed by a registered contractor who must pass at least a third to you as an invoice discount.

More Hytek services in Lone Tree

Lone Tree neighborhoods we serve

RidgeGate, Hillcamp, Carriage Club, Heritage Hills, Terra Ridge, Acres Green — ZIP 80124, 80134, 80112

Furnace Replacement near Lone Tree

Furnace Replacement in Lone Tree: common questions

How much does furnace replacement cost in Lone Tree?

Our published range is $3,500 – $8,500 installed. Every Hytek job is quoted flat-rate and approved before work begins, so the price you agree to is the price you pay. Replacements get free in-home estimates; see the full HVAC cost guide for the other services.

Do I need a permit for HVAC work in Lone Tree?

Repairs generally do not. Replacing or installing a furnace, AC, heat pump or water heater does. Permits for Lone Tree addresses go through City of Lone Tree Building Division. Permits are online-only through the city’s Accela portal. Lone Tree does not issue contractor licenses, but everyone on a permit must hold a Lone Tree business license. We pull the permit and schedule the inspection.

What HVAC rebates are available in Lone Tree in 2026?

For heat pumps: Xcel Energy’s 2026 heat pump rebates (the largest bonus goes to homes replacing gas heat); the $1,500 Power Ahead Colorado rebate (pre-approval required); Colorado’s $1,000 air-source heat pump credit, at least a third of which the installer must pass to you as a line-item discount. Xcel’s gas furnace rebates ended Jan. 1, 2026, and the federal 25C credit does not apply to 2026 installs.

How long do furnaces last in Lone Tree?

Typically 15–20 years here. With a median home built in 2004, many Lone Tree houses are on their second or third furnace. Age alone is not a reason to replace; a cracked heat exchanger, repeated repairs over about $1,000, or a unit under 80% AFUE is.

Who provides gas and electricity in Lone Tree?

Electric: Xcel Energy. Gas: Xcel Energy. That matters because rebates, operating costs and who you call about a gas leak all depend on the utility.

Does Hytek serve my part of Lone Tree?

Yes. We serve all of Lone Tree (ZIP 80124, 80134, 80112), including RidgeGate, Hillcamp, Carriage Club, Heritage Hills, Terra Ridge. Call (303) 627-3395 or request service online.

Local data: U.S. Census Bureau (2025 population estimates; ACS 2020–2024 housing age), NOAA 1991–2020 climate normals, and city, county and utility program pages, checked September 2026. Rebates change; we confirm eligibility on your address when we quote.

Lone Tree, CO

Need furnace replacement in Lone Tree?

Flat-rate pricing, approved before work starts. Family-owned in Centennial since 2004.

Call (303) 627-3395
Or schedule online →

$100 furnace tune-up & safety checkup in Lone Tree

Before the first cold snap: our 20-point furnace checkup covers the heat exchanger, gas pressure, carbon monoxide output, igniter, flame sensor and filter, with a written report. Flat-rate, 60 to 90 minutes.

Book a furnace tune-upCall (303) 627-3395

More furnace help in Lone Tree: furnace repair in Lone Tree · furnace maintenance in Lone Tree · all furnace repair services.

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